ISC: Serving Earthquake Engineer Community

Abstract eng:
The ISC has developed an on-line tool (http://www.isc.ac.uk/mapbuilder/wfs-t/engineer/index.html) to provide a first order approximation of seismicity parameters frequently used in the process of assessing seismic hazard, primarily for engineering applications. Seismicity data are retrieved from the extensive ISC database based on spatial and temporal requirements from the user. Declustering to exclude fore-shocks and after-shocks can be done either through setting of spatial, temporal and magnitude user's requirements at the time of the request. Further procedures are divided in two main steps: data collection and seismicity parameters computation. The Data Collection involves earthquake origin data retrieval from the ISC database, magnitude conversions from the ISC bulletin to Unified Magnitude and display of magnitude frequency relations for total and cumulative number of events. Seismicity parameters a, b, α and β of the Gutenberg-Richter distribution and a peak ground acceleration estimation are computed in the second step.

• Export as: BibTeX | MARC | MARCXML | DC | EndNote | NLM | RefWorks
• Add to your basket